\begin{thebibliography}{10}
\bibitem{fntguide}
{\LaTeX3 Project Team}.
\newblock \LaTeXe\ fontselection, 2000.
\url{http://www.latex-project.org/guides/fntguide.pdf}
\bibitem{impatient}
Paul~W. Abrahams, Karl Berry  und Kathryn Hargreaves.
\newblock {\TeX} for the {I}mpatient, 2003. \url{http://tug.org/ftp/tex/impatient/book.pdf}
\end{thebibliography}